Diel's cotoneaster

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Diel's cotoneaster
Cotoneaster dielsianus Kiev2.JPG

Diel's cotoneaster ( Cotoneaster dielsianus )

Systematics
Family : Rose family (Rosaceae)
Subfamily : Spiraeoideae
Tribe : Pyreae
Sub tribus : Pome fruit family (Pyrinae)
Genre : Medlars ( Cotoneaster )
Type : Diel's cotoneaster
Scientific name
Cotoneaster dielsianus
E. Pritz.
Branch with leaves

Diels cotoneaster or Diels' cotoneaster ( Cotoneaster dielsianus ) is a deciduous, up to 2 meters high, red-fruity shrub belonging to the pome fruit family (Pyrinae). The natural range of the species is in China. It is often used as an ornamental plant.

description

Diels cotoneaster is a deciduous, 1 to 2 meter high shrub with thin, blackish gray or blackish brown, round, initially dense shaggy and yellowish hairy branches that later become bald. The leaves are divided into a petiole and a leaf blade. The petiole is 1 to 3 millimeters long and tomentose. The stipules are linear-lanceolate, and about as long as the petiole, initially tomentose and hairy later. Some of them remain until the fruit is ripe. The leaf blade is simple, oval to ovate, rarely from 0.6, usually 1 to 2.5 centimeters long and 0.8 to 1.5 centimeters wide, coarse, with a pointed, rarely blunt or edged tip and a broad wedge-shaped or rounded base. The upper side of the leaf is glossy dark green, finely hairy or almost bare; the underside is densely hairy yellow-gray to gray-tomentose. The autumn color of the leaves is brownish red.

The flowers grow in 1.5 to 3 centimeters by measuring Schirmrispen from 3 to 7 flowers with shaggy haired spindle. The bracts are linear-lanceolate, 2 to 3 millimeters long and hairy downy. The flower stalks are hairy like the inflorescence spindle and 1 to 3 millimeters long. The flowers are 6 to 7 millimeters in diameter. The flower cup is hairy on the outside. The sepals are triangular, pointed rarely blunt or edged, 1 to 2 millimeters long and 1.5 to 2.5 millimeters wide. The petals stand erect, they are slightly pink, round to broadly obovate, 3 to 4 millimeters wide, with a blunt tip and a short nailed base. The 15 to 20 stamens are shorter than the petals. The tip of the ovary is finely haired. The usually three, rarely four or five free-standing styluses are very short. The fruits are dark or coral red, round or obovate, with a diameter of 5 to 8 millimeters. Three to five pips are formed per fruit. Diel's cotoneaster flowers from June to July, the fruits ripen from September to October.

Occurrence and location requirements

The natural range is in the Chinese provinces of Gansu , Guizhou , Hubei , Sichuan , Xizang and Yunnan . The species is feral in Europe. The cotoneaster grows in steppes , shrubbery areas and dry forests at an altitude of 1000 to 3600 meters on moderately dry to fresh, slightly acidic to alkaline, nutrient-rich soils in sunny to light-shaded locations. The species loves warmth and is usually frost hardy .

Systematics

Diels cotoneaster ( Cotoneaster dielsianus ) is a kind of the genus of cotoneaster ( Cotoneaster ). It is in the family of the rose family (Rosaceae) of the subfamily spiraeoideae, tribes of the subtribe Pyreae maloideae assigned (Pyrinae). The species was first scientifically described in 1900 by Ernst Georg Pritzel as Cotoneaster dielsiana . The generic name Cotoneaster is derived from the Latin "cotoneum malum" for the quince ( Cydonia oblonga ). The ending "aster" is a coarse form for groups of plants that are considered inferior in comparison to similar groups. The specific epithet dielsianus is reminiscent of the German botanist Ludwig Diels .

There are two varieties :

  • Cotoneaster dielsianus var. Dielsianus with 1 to 2.5 centimeters long and finely hairy leaf blades and red fruits. It occurs at altitudes from 1000 to 3600 meters.
  • Cotoneaster dielsianus var. Elegans Rehder & EH Wilson with 0.6 to 1.5 centimeters long, shiny and barely hairy, evergreen leaf blades and coral-red fruits. It occurs at altitudes of 2000 to 3000 meters.

use

Diels cotoneaster is very often used as an ornamental wood because of its impressive fruits and the remarkable autumn color .

proof

literature

  • Wu Zhengyi, Peter H. Raven, Deyuan Hong (Eds.): Flora of China . Volume 9: Pittosporaceae through Connaraceae . Science Press / Missouri Botanical Garden Press, Beijing / St. Louis 2003, ISBN 1-930723-14-8 , pp. 96 (English).
  • Andreas Roloff , Andreas Bärtels: Flora of the woods. Purpose, properties and use. With a winter key from Bernd Schulz. 3rd, corrected edition. Eugen Ulmer, Stuttgart (Hohenheim) 2008, ISBN 978-3-8001-5614-6 , p. 229.
  • Jost Fitschen: Woody flora . 12th, revised and expanded edition. Quelle & Meyer, Wiebelsheim 2007, ISBN 3-494-01422-1 , p. 439 .
  • Helmut Genaust: Etymological dictionary of botanical plant names. 3rd, completely revised and expanded edition. Nikol, Hamburg 2005, ISBN 3-937872-16-7 (reprint from 1996).

Individual evidence

  1. ↑ German name after Roloff et al .: Flora der Gehölze , p. 229.
  2. ^ German name according to Fitschen: Gehölzflora , p. 439.
  3. ↑ a b c d Zhi-Yun Zhang, Hongda Zhang, Peter K. Endress: Cotoneaster dielsianus , in: Wu Zhengyi, Peter H. Raven, Deyuan Hong (eds.): Flora of China . Volume 9: Pittosporaceae through Connaraceae . Science Press / Missouri Botanical Garden Press, Beijing / St. Louis 2003, ISBN 1-930723-14-8 , pp. 96 (English).
  4. ↑ a b c d e Roloff et al .: Flora der Gehölze , p. 229.
  5. ↑ a b Cotoneaster dielsianus. In: Germplasm Resources Information Network (GRIN). United States Department of Agriculture, accessed April 28, 2012 .
  6. ↑ D. Potter, T. Eriksson, RC Evans, S. Oh, JEE Smedmark, DR Morgan, M. Kerr, KR Robertson, M. Arsenault, TA Dickinson, CS Campbell: Phylogeny and classification of Rosaceae . Plant Systematics and Evolution, Volume 266, 2007, pp. 5-43. doi : 10.1007 / s00606-007-0539-9
  7. ↑ Exactly: Etymological Dictionary of Botanical Plant Names , p. 181
  8. ↑ Zhi-Yun Zhang, Hongda Zhang, Peter K. Endress: Cotoneaster dielsianus var dielsianus , in: Wu Zhengyi, Peter H. Raven, Deyuan Hong (eds.): Flora of China . Volume 9: Pittosporaceae through Connaraceae . Science Press / Missouri Botanical Garden Press, Beijing / St. Louis 2003, ISBN 1-930723-14-8 , pp. 102 (English). .
  9. ↑ Zhi-Yun Zhang, Hongda Zhang, Peter K. Endress: Cotoneaster dielsianus var elegans , in: Wu Zhengyi, Peter H. Raven, Deyuan Hong (eds.): Flora of China . Volume 9: Pittosporaceae through Connaraceae . Science Press / Missouri Botanical Garden Press, Beijing / St. Louis 2003, ISBN 1-930723-14-8 , pp. 102 (English).

Web links

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